package com.npr.event;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.npr.entity.DiscussPost;
import com.npr.entity.Event;
import com.npr.entity.Message;
import com.npr.service.DiscussPostService;
import com.npr.service.ElasticSearchService;
import com.npr.service.MessageService;
import com.npr.util.CommunityConstant;
import com.npr.util.CommunityUtil;
import com.qiniu.common.QiniuException;
import com.qiniu.common.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;
import com.qiniu.util.StringMap;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.stereotype.Component;

import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Future;

@Component
public class EventConsumer implements CommunityConstant {
    private static final Logger logger = LoggerFactory.getLogger(EventConsumer.class);
    @Autowired
    private MessageService messageService;
    @Autowired
    private DiscussPostService discussPostService;
    @Autowired
    private ElasticSearchService elasticSearchService;
    @Value("${wk.image.command}")
    private String wkImageCommand;

    @Value("${wk.image.storage}")
    private String wkImageStorage;
    @Value("${qiniu.bucket.share.name}")
    private String shareBucketName;
    @Value("${qiniu.bucket.share.url}")
    private String shareBucketUrl;
    @Value("${qiniu.key.secret}")
    private String secretKey;
    @Value("${qiniu.key.access}")
    private String accessKey;
    //定时任务线程池
    @Autowired
    private ThreadPoolTaskScheduler taskScheduler;
    @KafkaListener(topics = {TOPIC_COMMENT,TOPIC_LIKE,TOPIC_FOLLOW})
    public void handleCommentMessage(ConsumerRecord record){
        if (record == null||record.value()==null){
            logger.error("消息的内容为空");
            return;
        }
        Event event = JSON.parseObject(record.value().toString(),Event.class);
        if(event == null){
            logger.error("消息格式错误");
            return;
        }
        //发送站内通知
        Message message = new Message();
        message.setFromId(SYSTEM_USER_ID);
        message.setToId(event.getEntityUserId());
        message.setConversationId(event.getTopic());
        message.setCreateTime(new Date());


        Map<String,Object> content = new HashMap<>();
        content.put("userId",event.getUserId());
        content.put("entityType",event.getEntityType());
        content.put("entityId",event.getEntityId());
        if (!event.getData().isEmpty()){
            for (Map.Entry<String, Object> entry : event.getData().entrySet()) {
                content.put(entry.getKey(),entry.getValue());
            }
        }
        message.setContent(JSON.toJSONString(content));
        messageService.addMessage(message);
    }
    //消费发帖事件
    @KafkaListener(topics = {TOPIC_PUBLISH})
    public void handlePublishMessage(ConsumerRecord record){
        if (record == null||record.value()==null){
            logger.error("消息的内容为空");
            return;
        }
        Event event = JSON.parseObject(record.value().toString(),Event.class);
        if(event == null){
            logger.error("消息格式错误");
            return;
        }
        DiscussPost post = discussPostService.findDiscussPostById(event.getEntityId());
        elasticSearchService.saveDiscussPost(post);
    }
    //消费删帖事件
    @KafkaListener(topics = {TOPIC_DELETE})
    public void handleDeleteMessage(ConsumerRecord record){
        if (record == null||record.value()==null){
            logger.error("消息的内容为空");
            return;
        }
        Event event = JSON.parseObject(record.value().toString(),Event.class);
        if(event == null){
            logger.error("消息格式错误");
            return;
        }

        elasticSearchService.deleteDiscussPost(event.getEntityId());
    }
    //消费分享事件
    @KafkaListener(topics = TOPIC_SHARE)
    public void handleShareMessage(ConsumerRecord record){
        if (record == null||record.value()==null){
            logger.error("消息的内容为空");
            return;
        }
        Event event = JSON.parseObject(record.value().toString(),Event.class);
        if(event == null){
            logger.error("消息格式错误");
            return;
        }
        String htmlUrl = (String) event.getData().get("htmlUrl");
        String fileName = (String) event.getData().get("fileName");
        String suffix = (String) event.getData().get("suffix");

        String cmd = wkImageCommand + " --quality 75 "
                +htmlUrl+" "+wkImageStorage+'/'+fileName+suffix;
        try {
            Runtime.getRuntime().exec(cmd);
            logger.info("生成长图成功："+cmd);
        } catch (IOException e) {
            logger.error("生成长图失败"+e.getMessage());
            e.printStackTrace();
        }
        // 启用定时器，监视器该图片，一旦生成了，就上传至七牛云
        UploadTask task = new UploadTask(fileName,suffix);
        Future future = taskScheduler.scheduleAtFixedRate(task,500);
        task.setFuture(future);
    }
    class UploadTask implements Runnable{
        //文件名称
        private String fileName;
        //文件后缀
        private String suffix;
        //启动任务的返回值
        private Future future;
        //开始时间
        private long startTime;
        //上传次数
        private int uploadTimes;

        public UploadTask(String fileName, String suffix) {
            this.fileName = fileName;
            this.suffix = suffix;
            this.startTime = System.currentTimeMillis();
        }

        public void setFuture(Future future) {
            this.future = future;
        }

        @Override
        public void run() {
        //生成失败
            if (System.currentTimeMillis()-startTime>30000){
                logger.error("执行时间过长，终止任务"+fileName);
                future.cancel(true);
                return;
            }
            //上传失败
            if(uploadTimes>=3){
                logger.error("上传次数过多，终止任务:"+fileName);
                future.cancel(true);
                return;
            }
            String path = wkImageStorage+"/"+fileName+suffix;
            File file = new File(path);
            if (file.exists()){
                logger.info(String.format("开始第%d此上传[%s]",++uploadTimes,fileName));
                StringMap policy = new StringMap();
                policy.put("returnBody", CommunityUtil.getJSONString(200));
                // 生成上传凭证
                Auth auth = Auth.create(accessKey,secretKey);
                String uploadToken = auth.uploadToken(shareBucketName,fileName,3600,policy);
                // 指定上传机房
                UploadManager manager = new UploadManager(new Configuration(Zone.zone1()));
                try {
                    // 开始上传图片
                    Response response = manager.put(
                            path, fileName, uploadToken, null, "image/" + suffix, false);
                    // 处理响应结果
                    JSONObject json = JSONObject.parseObject(response.bodyString());
                    if (json == null || json.get("code") == null || !json.get("code").toString().equals("200")){
                        logger.info(String.format("第%d次上传失败[%s]",uploadTimes,fileName));
                    } else {
                        logger.info(String.format("第%d次上传成功[%s]",uploadTimes,fileName));
                        future.cancel(true);
                    }
                } catch (QiniuException e){
                    logger.info(String.format("第%d次上传失败[%s]",uploadTimes,fileName));
                }
            } else {
                logger.info("等待图片生成["+fileName+"]");
            }


        }
    }
}
